Doctors have found that antibiotics are great germ killers. Why different antibiotics kill different groups of germs they do not know. But, just as a hopeful pool player with no clear shot will try a combination, so will they. If penicillin alone will not work in a particular case, they may try penicillin and aureomycin together. But haphazard combinations of antibiotics may delay, instead of hasten, the patient's cure.
Researchers at the University of California have found that there are about as many cases of antagonism between the drugs as there are of cooperation. By & large, they report, any two of...